INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.

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INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
May 2019
Investor
Presentation
NYSE American: ISR
INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
Safe Harbor Statement
Statements in this presentation about Isoray's future expectations, including: the advantages of our products and their delivery systems, whether interest in and
use of our products will increase or continue, whether our new marketing strategy will continue to increase sales, whether use of Cesium-131 in non-prostate
applications will continue to increase revenue, whether further manufacturing and production process improvements will be completed or will result in lower
costs, whether our market presence and growth will continue, the timing of ongoing commercialization of GammaTileTM Therapy, the acceptance rate of our Blu
Build delivery system, the positive industry data fueling renewed interest in brachytherapy, and all other statements in this presentation, other than historical
facts, are "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 ("PSLRA"). This statement is included for the
express purpose of availing Isoray, Inc. of the protections of the safe harbor provisions of the PSLRA. It is important to note that actual results and ultimate
corporate actions could differ materially from those in such forward-looking statements based on such factors as physician acceptance, training and use of our
products, our ability to successfully manufacture, market and sell our products, our ability to manufacture our products in sufficient quantities to meet demand
within required delivery time periods while meeting our quality control standards, our ability to enforce our intellectual property rights, whether additional studies
are released and support the conclusions of past studies, whether ongoing patient results with our products are favorable and in line with the conclusions of
clinical studies and initial patient results, patient results achieved when our products are used for the treatment of cancers and malignant diseases, successful
completion of future research and development activities, whether we, our distributors and our customers will successfully obtain and maintain all required
regulatory approvals and licenses to market, sell and use our products in its various forms, continued compliance with ISO standards, the scheduling of physicians
who either delay or do not schedule patients in periods anticipated, the use of competitors' products in lieu of our products, less favorable reimbursement rates
than anticipated for each of our products, the success of our sales and marketing efforts, changes in reimbursement rates, changes in laws and regulations
applicable to our products, and other risks detailed from time to time in Isoray's reports filed with the Securities and Exchange Commission. Unless required to do
so by law, the Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future
events or otherwise.
For more information regarding risks and uncertainties that could affect Isoray’s results of operations or financial condition review Isoray’s filings with the
Securities and Exchange Commission (in particular, it’s most recently filed Form 10-K and Form 10-Qs). Isoray undertakes no obligation to update or revise any
forward-looking statements, whether as a result of new information, future events or otherwise. This presentation shall not constitute an offer to sell or the
solicitation of an offer to sell or the solicitation of an offer to buy any securities of Isoray nor shall there be any sale of securities in any jurisdiction in which such
offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction.

                                                                                                                                                         Page 2
INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
Isoray at a Glance
• Consistent Revenue Growth and Improving Gross
  Profit Trends
    • 8 consecutive quarters of double digit year-over-year
      revenue increases
    • TTM Gross Profit Growth of 37%
    • 45.7% Gross Margin in most recent quarter
• Large Opportunity to Gain Share in Core Prostate
  Market
• Brain Brachytherapy is re-emerging as an option for
  Recurrent Brain Tumors
• Maturing clinical studies for surgical cancer
  treatments using Cesium-131

                                                              Page 3
INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
Our Mission
                                                                       Market Data
Isoray advances innovative
radiotherapeutic technologies                                          Ticker (NYSE American)                               ISR
that focus on the patient.
                                                                       Price (5/9/2019)                                     $0.44
                                                                       52 Week Range                                        $0.27 - $1.22
                                                                       Market Cap                                           $29.6 M
                                                                       Average Daily Trading (90 Day)                       ~174,000
                                                                       Common Shares Outstanding*                           67.3 M
Isoray, Inc, through its subsidiary Isoray Medical, Inc. is the sole   Cash, Cash Equivalents & CD’s*                       $6.39 M
producer of Cesium-131 brachytherapy seeds, which are
expanding brachytherapy treatment options throughout the               Trailing 12 Month Revenue**                          $6.99 M
body.
                                                                       * As of March 31, 2019; **4/1/2018 – 3/31/2019

                                                                                                                        Page 4
INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
Experienced Management Team
Lori A. Woods                            •   More than 30 years of experience in healthcare and is well-known and respected in the brachytherapy community
                                         •   Previously served as a VP and COO of Isoray from 2006 to 2010, returned to the company in 2016 and appointed CEO in 2018
Chief Executive Officer
                                         •   Streamlined manufacturing operations, reduced supply costs and established initial reimbursement rates for Cesium-131
                                         •   Uniquely qualified to lead the company into an era of growth based on the unique technology advantages developed by Isoray

Jonathan Hunt                            • 25 years of finance and accounting experience excelling as a versatile leader
                                         • Successful track record in turnarounds, startups, mergers, divestitures, growth strategies, performance and operations management
Chief Financial Officer
                                           and analysis multiple organizations, including Fortune 500 companies
                                         • Previous experience from 2006 to 2010 at Isoray makes him uniquely qualified to step into a leadership role driving efficiencies while
                                           growing the company

William A. Cavanagh                      • Joined Isoray in 2010 as Vice President of Research and Development
                                         • Served as Chief Operating Officer and Chief Scientific Officer from 2016 to 2019
Chief Research and Development Officer
                                         • Over 30 years career in cancer treatment technologies including research and development of brachytherapy for treatment of prostate
                                           cancer
                                         • Guiding product development and clinical strategy and investment in clinical protocols for prostate, brain, head & neck and other
                                           cancers
Michael L. Krachon                       • Joined Isoray in March 2016
                                         • Over 20 years’ experience of progressive growth in sales and marketing in the medical industry, including as leader of international
Vice President, Sales and Marketing
                                           brachytherapy commercial team
                                         • Restructured sales and marketing team and helped set focused sales strategy
                                         • Relaunched website and refined marketing materials and social awareness programs

                                                                                                                                                       Page 5
INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
A Proven Treatment
Brachytherapy
Radiotherapy in which sealed sources of
radioactive material are implanted in
and/or around the affected tissue as close
to the cancer as possible.
Benefits:
•   Highly targeted treatment dose
•   Limits dose to surrounding critical
    structures
•   Reduces negative side effects
•   Personalized radiation dose
•   Low-cost effective treatment
•   Out-patient one day treatment

                                             Page 6
INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
Market Opportunity

 Prostate                           Brain                                                 Surgical
 •   Growing body of literature     •      Cesium-131 is emerging as                      •   Success in recurrent
     supporting outcome                    an alternative to other                            Gynecological cancer
     benefits of brachytherapy             isotopes                                           treatment
 •   Full solutions for localized   •      Partnership with GT                            •   Expanding experience in
     disease                               Medical Technologies                               Head and Neck cancers
 •   Increased opportunities for    •      Efficient delivery of                          •   Cancers with large unmet
     targeted delivery systems             radiation, starting at time                        medical needs increasingly
                                           of surgery                                         testing Cs-131
                                                                                          •   Highly concentrated dose
                                                                                              to targeted tissue

            ~$585M                                    ~$218M                                         ~$208M
     Opportunity with Cesium-131            Opportunity with Cesium-131                       Opportunity with Cesium-131

                                        Refer to slide 24 for calculations and sources.

                                                                                                                      Page 7
INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
Changing Market Environments

Expanding the Brachytherapy
Market
Changes to the reimbursement that reward cost-effectiveness of
procedures
•   Brachytherapy has been included in proposals that bundle
    payment for radiation treatments. As the lowest cost-option, this
    could dramatically shift the treatment paradigm
      •   Isoray support activity: established strategy with our reimbursement
          partners to support
Increased procedure awareness
•   Brachytherapy is a patient-driven procedure (clinicians often
    have incentives for other procedures) – heighten awareness of the
    benefits of the procedure drove adoption in the ‘90s and could
    create a shift in perspective
      •   Isoray support activity: implementing social and digital marketing
          strategies to raise awareness
Drive to leverage comparative effectiveness data
•   The clinical benefit of direct radiation placement in the tumor
    allow for the ultimate in conformal, personalized radiation
      •   Isoray support activity: established strategy to educate payor
          community

                                                                                 Page 8
INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
The Isoray Advantage
                                                               Cesium-131

The Power of Cesium-                                          Introduced in 2004

                                                             9.7 Day Half Life
131                                                The amount of time for the radiation to
                                                   half. A shorter half life means quicker to
                                                            PSA baseline. (8, 12, 13)
                                                                                                 Palladium-103                                       Iodine-125
                                                                  30.4 Kev                       Introduced in 1986                               Introduced in 1965
With a higher energy and a shorter half-life        The energy level of the isotope. Higher
than competitors, Cesium-131 is proven to be                                                       17 Day Half Life                                  60 Day Half Life
                                                    energy leads to greater coverage of the
a highly effective treatment for patients in the               infected organ.
                                                                                                        20.8 Kev                                           28.5 Kev
fight against cancer.
                                                                                                58 Days for 90% Dose                          204 Days for 90% Dose
•   Treatment delivered faster than external              33 Days for 90% Dose
    radiation (90% in 33 days)                            Faster dose delivery rate.
                                                                                                  125 Gy Total Dose                               145 Gy Total Dose
•   Powerful, continuous, therapeutic energy                                                    Detectable in the body                     Detectable in the body for
                                                            115 Gy Total Dose                        for 107 Days                                  600 Days
                                                   The amount of dose. A lower dose means
                                                     less total radiation used to treat your
                                                                     cancer.
                                                                                                   Armpilla C, Dale R, Coles I, et al. The determination of radiobiologically
                                                                                                   optimized half-lives for radionuclides used in permanent brachytherapy
                                                                                                   implants. Int J Rad Onc Biol Phys 2003; 55:378-385.
                                                           Detectable in the body
                                                              for only 97 Days

                                                                                                                                               Page 9
INVESTOR PRESENTATION - MAY 2019 - ISORAY, INC.
An Industry Leader

Prostate Cancer
American Cancer Society estimates 174,650
cases of Prostate Cancer in 2019                       174,650
    • Estimated 122,225 brachytherapy cases annually   Prostate Cancer Cases
                                                          Estimated 2019
    • +/- $585 Million market opportunity if treated
      with Cesium-131
                                                                                                            67%
                                                                                                     Of Cases Treatable with
Clinical data supports Cesium-131                                                                          Cesium-131
    • Long term data maturing
    • Short-half life addresses historical urology
      concerns about prolonged urinary symptoms
    • Recent publications demonstrate sustained low
      toxicity following Cesium-131                           Refer to slide 24 for calculations and sources.

                                                                                                          Page 10
Cesium-131
High Risk Prostate Patients                                                            Solutions for

                                                                                       Local Disease
                                                                                       •   Focal for low risk (high quality of life)
High Risk Disease is an immediate                                                      •   Combination therapy for higher risk patients
                                                                                       •   Salvage / recurrent disease
opportunity to expand procedures
                                                                                       •   Delivery systems for spectrum of physician techniques
10,000-15,000 men annually diagnosed as High-Risk
•    Segment growing due to lessened screening
     recommendations
•    Brachytherapy + External Radiation offers better
     outcomes to men with High Risk Pca than
     alternatives (ASCENDE-RT, Kishan JAMA 2018)
Cesium-131 delivers fastest combination treatment
with external radiation
•    Incorporation of SpaceOAR seeks to further
     minimize side effects of combination therapy

    * Combination therapy includes brachytherapy and external beam radiation therapy

                                                                                                                                Page 11
Bold & Forward Thinking

Initiatives for
Growth in Prostate
• Providing Market Leadership
     •   Investing in clinical data and research
     •   Raising awareness of brachytherapy
            •   Digital and Social Media awareness programs
            •   Find a Doctor – Website
     •   Support Professional Societies & Educational Resources
         for Clinicians
            •   Brachytherapy training collaboration with Texas Oncology
• Maximizing sales momentum
     •   Leveraging 7 Highly Trained Sales Professionals
            •   Increasing field presence and direct customer interactions
     •   Driving organic growth within existing customers
     •   Utilizing clinical data to support increased utilization of
         Cesium-131
• Offer Complete Solutions for local disease
     •   Focal for low risk (high quality of life)
     •   Combination therapy for higher risk patients
     •   Salvage / recurrent disease
                                                                             Page 12
10+ Years
The Data is In.
Cesium-131 continues to outperform Iodine in
studies focused on patient experience. With 10+
years of data and a range of studies, over 13,000+
patients have experienced the power of Cesium-131.
                                                                       “
                                                                       Our results compare favorably to those with 125I and
                                                                       demonstrate that excellent long-term biochemical control
                                                                       outcomes can be achieved with use of 131Cs prostate BT in
                                                                       well-selected patient cohorts.

                                                                       131Cs prostate BT affords a more favorable acute
                                                                       morbidity profile with return to baseline QOL in the long
                                                                       term.
10 Year Data Presented at ASTRO 2018:
•    261 Low Risk Patients                                             While mature data has previously been lacking, our long-

•    Cesium-131 Therapy Only (monotherapy)                             prostate implantation with 131Cs.
                                                                                                         “
                                                                       term results provide strong clinical impetus to continue

•    Biochemical Success
                                                                       by Dr. Agarwal
         •    97% at 5 years
         •    90% at 10 years

https://www.brachyjournal.com/article/S1538-4721(18)30241-1/abstract

                                                                                                             Page 13
Real-time Planning
Blu Build Delivery System
Provides Isoray access to 25% More of
the Prostate Market and a Higher ASP
Proprietary Delivery Device
• First new tool for prostate brachytherapy in > 10 years
• Disposable, single use, next-generation device allows for
   greater patient throughput, no sterilization increases
   operating room efficiencies
• Provides the ability to deliver a precise dose of Cesium-
   131 customized to the patient’s anatomy and cancer at
   the time of surgery

Addressing the Customization Segment of Prostate
Brachytherapy Market
• ~25% of prostate brachytherapy cases require some level
   of OR customization
• Blu Build expands Isoray’s ability to address range of
   physician techniques
• Initial interest and adoption is promising

Isoray can now support the full range of physician techniques
for prostate cancer brachytherapy treatments.                   Page 14
A Growing Opportunity
Brain Cancer

$218 million annual market potential
for brain tumors
•   Provides a new treatment option for patients without other
    options                                                                 188,820
•   Brain tumors impact ~188,820 patients annually                        Potential Brain Tumor Patients
•   Recurrence occurs within 18 months for nearly all patients treated
    for brain tumors

Brachytherapy created historical interest, but prior isotopes had flaws
                                                                                                                                  33%
                                                                                                                            Of Cases Treatable with
•   Energy was not delivered fast enough, radiation necrosis occurred                                                             Cesium-131
    in some patients as anatomy shifted

Cesium-131 is showing promise in a growing number of clinical studies
•   Faster energy delivery allows energy to be delivered before
    anatomy changes
•   Immediate radiation delivery, no need for surgical healing                         Refer to slide 24 for calculations and sources.
•   Publications from Weill Cornell Medical College, Barrow
    Neurological Institute, USCF, John Hopkins, demonstrate high
    rates of brain cancer control when Cesium-131 brachytherapy is
    combined with surgery

                                                                                                                                   Page 15
Cesium-131 Powers
GammaTile™ Therapy

                                                                                       Side View
Collaborative partnership
with GT Medical Technologies                               Inside Arrangement

•   Isoray has exclusive 10 year manufacturing and
    isotope supply agreement                           GammaTile™ with Cesium-131 Seeds
•   510(K) completed, ICD-10 reimbursement code        •   Device is a combination of Cesium-131 seeds
    received, NTAP Application targeted 7/2019             embedded into collagen “tiles” that are placed
•   GT Medical Technologies recently completed $10         onto the resection margin during surgery
    million capital raise in preparation for broader   •   Saves patients multiple trips for radiation post
    commercial launch in mid 2019                          surgical procedure
                                                       •   Process adds less than 10 minutes to brain
First three patients treated in February and March,        surgery
2019

                                                                                          Page 16
Radiation Location and Intensity

External Beam Vs. GammaTile™ Therapy
                              Distribution and Intensity of   Distribution and intensity of
              After Surgery      GammaTile™ Therapy                External Radiation

                                                                                              Page 17
Pioneering Options
Surgical Opportunities

Combined $208 Million
Market Potential
•   Cancers with large unmet medical needs
                                                         390,150
                                                         Surgical Cancer Cases
    increasingly leveraging benefits of Cesium-131          Estimated 2019

•
•
    Cesium-131 placed at the site of tumor recurrence
    Immediate radiation delivery, no need for surgical
                                                                                                            7.7%
                                                                                                       Of Cases Treatable with
    healing                                                                                                  Cesium-131

                                                               Refer to slide 24 for calculations and sources.

                                                                                                           Page 18
Pioneering Options
For Women with                                               Now a textbook chapter published with
GYN Cancers                                                  a quote from Dr. Jonathan Feddock:

Success in recurrent gynecological cancer treatment
•
•

•
    Initial clinical publications
    Additional institutions progressing through adoption
    process
    Alternative is removing all pelvic organs
                                                             “    Cs-131 interstitial implants are relatively easy to
                                                                  perform in most cases and can be used as a safe,
                                                                  effective, and potentially curative option in patients
                                                                  with primary disease and in those with locally
                                                                  recurrent disease, whether or not the patient has had
                                                                  previous RT.
•   Implantation into cancers of the cervix and uterus are        This curative option should be more frequently and
    similar to the implantation into prostate cancers
                                                                  widely incorporated into gynecologic oncology and
                                                                                                                     “
                                                                  radiation oncology practice, especially as experience
                                                                  increases and as clinical data continues to mature.

            Prostate                Cervix Uteri                                                       Page 19
Pioneering Options
Head & Neck

                                                               “
Expanding experience in Head and Neck cancers
•   Strategic collaborations with Thomas Jefferson
    University, Case Western and Weill Cornell                 … we show here that 131Cs brachytherapy may
•   Adding sites for expanded protocols                        play a beneficial role in the treatment of
•
•
    Reimbursement review underway
    Preliminary discussions of study of Cs-131 combined with
                                                                           “
                                                               recurrent head and neck cancer and warrants
                                                               further study.
    immunotherapy

                                                                                             Page 20
Emerging Trends

                                                           “
Immunotherapy
                                                           131Cs offers a high dose-rate, focused delivery, and

                                                           less radiation exposure to adjacent tissues,
Isoray is committed to the constant study of Cesium-
131 as the preferred isotope for brachytherapy and         personnel, and the patient’s family [23,31].”
emerging treatment options, like immunotherapy.
We’re working with teams around the world to study         131Cs with salvage surgery and other combinations
patient success and bring new innovations to market        with immunotherapy may offer a viable treatment
that build on our expertise as a leader in radiotherapy.
                                                           pathway for RHNC [recurrent head & neck cancer]
                                                           for some patients and should be studied in future
                                                           clinical trials. Our institution has recently been
                                                                                           “
                                                           studying 131Cs brachytherapy in RHNC with
                                                           preliminary promising results.

                                                                                             Page 21
Ongoing & Recently Published

Growing Clinical Support of Cesium-131
Key on-going data collection                                                        •   2018 Cureus: Positive outcomes for patients with recurrent brain
     •   Recurrent Brain tumor treatments at Barrow Neurological Institute              metastases following Cesium-131 brachytherapy – Johns Hopkins U (Xia,
     •   Head & Neck treatment in process at Thomas Jefferson and Case Western          Kleinberg, Lim).
     •   Advanced Vaginal, Cervical and Uterine Cancers at University of Kentucky   •   2018 Brachytherapy (journal): Safety results of template technique with
     •   Prostate Cancer treatment for high risk, quality of life and targeted          Cesium-131 in advanced pelvic cancers (Feddock, et al.)
         treatments                                                                 •   2017 Red Journal: Long term (5 Years) QOL following Cs131 for Prostate
     •   Long-term prostate cancer outcomes with Cesium-131                             (Glaser, UPMC)
     •   Keyhole Craniotomy Brain tumor treatments at Ochsner Clinic Foundation     •   2017 Red Journal: Large Brain Mets (Wernicke, Cornell)
                                                                                    •   2017 Red Journal: Cs131 for recurrent GYN disease (Feddock, UK)
                                                                                    •   2017 ASTRO: 9 Year Prostate Outcome Comparison I125 and Cs131
Cesium-131 in recent publications and conferences
                                                                                        Prostate (Moran, CPCC)
     •   2018 Journal of Neurosurgery: Resection and Cesium-131 GammaTile
         treatment for recurrent meningioma. (DG Brachman, et al.)                  •   2017 AUA NE: Prostate Focal Therapy; Long Term Outcomes; Large
                                                                                        Prostates (Benoit, UPMC)
     •   2018 Journal of Contemporary Brachytherapy: A reintroduction of
         brachytherapy with or without surgery for recurrent head and neck          •   2016 / 2017 SNO: Preliminary Outcomes for Recurrent Brain Cancer
         cancer. (Rodin, et al.)                                                        (Youssef, BNI)
     •   2018 Cureus: Cs131 Isotope for Brain Brachytherapy (Han, UCSF)
     •   2018 GU/ ASCO / ASTRO: Preliminary Focal Therapy Outcomes with Cs131
         (Moran, CPCC)

                                                                                                                                      Page 22
POTENTIAL MARKET WITH CESIUM-131
                                  In Millions

      Lung Cancer                               Prostate Cancer
          $57                                        $585

Head & Neck Tumors
       $132

                                  Brain Tumors
                                      $218
     Recurrent GYN Tumors
             $19

                    Cesium-131 Targeting >$1B Opportunity
                                                                  Page 23
Cesium-131 Targeting >$1B Opportunity
 Disease State                               2019 Estimated                 Potential LDR Patients*                                   Potential Revenue2
                                             Annual Diagnosis3
 Prostate Cancer                             174,650                        117,015                                                   $585M
                                                                            (67% Treatable with Cs-131)                               @ $5,000 per Treatment w/ Cs-131

 Brain Cancer                                188,820                        62,311                                                    $218M
 -   Primary CNS Cancer                      23,820                         (33% Treatable with Cs-131)                               @ $3,500 per Treatment w/ Cs-131
 -   New Metastases                          100,0004
 -   Recurrent Cancer                        65,0004
 Gynecological Cancers                       109,000                        5,450                                                     $19M
 -   Uterus                                  61,880                         (20% Recurrence Rate)                                     @ $3,500 per Treatment w/ Cs-131
 -   Ovary                                   22,530                         (25% Treatable with Cs-131)
 -   Cervix                                  13,170
 -   Vagina & Other Genital                  5,350
 -   Vulva                                   6,070
 Head & Neck Tumors                          53,000                         13,250                                                    $132M
 -   Mouth                                   14,310                         (25% Treatable with Cs-131)                               @ $10,000 per Treatment w/ Cs-131
 -   Pharynx                                 17,870
 -   Tongue                                  17,060
 -   Other oral cavity                       3,760
 Lung Cancers                                228,150                        11,408                                                    $57M
                                                                            (5% Treatable with Cs-131)                                @ $5,000 per Treatment w/ Cs-131

 Total Opportunity                           753,620                        209,434 Patients                                          ~$1B
     1.   https://cancerstatisticscenter.cancer.org/#!/                             3.    https://academic.oup.com/neuro-oncology/article/20/suppl_4/iv1/5090960
     2.   https://www.mskcc.org/cancer-care/types/brain-tumors-metastatic           *Estimates of cases based on internal assessments from ACS data, market reports.      Page 24
Strong Revenue and Gross Margin Trends
Eight Quarters of Double Digit Revenue Growth ~ 2 Year CAGR of 24%
                      $2,150                                                                                                                                     50%
                      $2,000                                                                                                                                     45%
                      $1,850                                                                                                                                     40%
                      $1,700                                                                                                                                     35%
Revenue ($ in 000s)

                                                                                                                                                                         Gross Margin (%)
                      $1,550                                                                                                                                     30%
                      $1,400                                                                                                                                     25%
                      $1,250                                                                                                                                     20%
                      $1,100                                                                                                                                     15%
                       $950                                                                                                                                      10%
                       $800                                                                                                                                      5%
                       $650                                                                                                                                      0%
                       $500                                                                                                                                      -5%
                               4Q16   1Q17   2Q17     3Q17          4Q17          1Q18          2Q18          3Q18          4Q18          1Q19   2Q19   3Q19
                                                                      Revenue                Gross Margin

                                                Prostate Revenue comprised 87% of Total Revenue for last 8 quarters and has 2 year CAGR of 25%
                                                                             Isoray’s fiscal year ends June 30th
                                                                                                                                                               Page 25
Income Statement Highlights
$/000’s                               F3Q19 (3/31/19)   TTM (3/31/19)
Product Sales, Net                        $1,924           $6,993
Cost of Product Sales                      1,045            4,388
Gross Profit/(Loss)                         879             2,605

Research and Development                    299             1,704
Sales and Marketing                         645             2,676
General and Administrative                 1,099            4,729
Gain on Equipment Disposal                    (1)              (24)
Operating Loss                            (1,163)           (6,480)
Net Loss                                  (1,127)           (6,408)

Basic & Diluted Loss Per Share            $(0.02)           $(0.11)
Weighted Average Shares Outstanding       67,333           64,069

                                                                        Page 26
Balance Sheet Highlights
                                                                                                March 31, 2019   June 30, 2018
$/000’s                                                                                           (Unaudited)
Cash, Cash Equivalents & CD’s                                                                      $6,392           $3,425
Total Current Assets                                                                                8,431            5,446

Total Current Liabilities                                                                           1,355            1,835
Long Term Debt*                                                                                         --               --
Stockholders Equity                                                                                 8,611            5,030
Total Liabilities and Stockholders Equity                                                         $10,579           $7,455

Working Capital                                                                                    $7,076           $3,611
Current Ratio                                                                                       6.22x            2.97x

* Long-term debt excludes amounts that are not related to cash borrowings or operational debt

                                                                                                                     Page 27
Isoray 2019

Key Takeaways
Consistent Revenue Growth and Improving Gross Profit Trends
•   8 consecutive quarters of double digit year-over-year revenue increases
      • Following establishment of new commercial management and strategy in 2016
      • Growing market share (~7-8% current market share)
•   TTM Gross Profit Growth of 37% and 45.7% Gross Margin in most recent quarter
      • Manufacturing and process improvements, tightened expense controls and plant automation being
        implemented summer of 2019.
Large Opportunity to Gain Share in Core Prostate Market
•   Expanding market opportunity with complimentary product introductions such as Blu Build
•   Expanding Cesium-131 opportunity across range of localized prostate cancer patients (Focal,
    Combination, Salvage)
Brain Brachytherapy is re-emerging as an option for Recurrent Brain Tumors
•   Growing base of customers leveraging brachytherapy at the time of surgery
•   GammaTile™ Therapy scheduled for broader commercial launch Summer 2019
Maturing clinical studies for surgical cancer treatments using Cesium-131
Research and Development Pipeline
•   Developing pipeline of potential therapies and devices
•   Evaluating innovative radiotherapeutic technologies that focus on patient specific therapies

                                                                                                        Page 28
For Further Information:
Mark Levin
Investor Relations
(501) 255-1910
mark@globalirgroup.com

                           Page 29
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